Synonyms of ditzy

2 Syllables
fickle, frothy, goofy, dizzy, flighty, giddy, heedless, goofier, brainless
3 Syllables
frivolous, erratic, inconstant, capricious, flustered, changeful, careless, changeable, bemused, lightheade
4 Syllables
empty-headed, featherbrained, harebrained, bubbleheaded
5 Syllables
irresponsible, irresolute